Interactive calculators · field aids
Online Tools
Every calculator and field aid in the compendium, gathered in one place. All run entirely in your browser — no data leaves your device, nothing is tracked, and they work offline once loaded.
Data table
| Job | Window (DAP, negative = pre-plant) | Tool |
|---|---|---|
| Soil test · lime · beds · drains | -90–0 | Liming calculator (Soils 04) |
| Seed graded, treated, stored | -90–0 | Seed calculator (Seed 05) |
| Season budget | -60–0 | Budget dashboard (Economics 14) |
| Fertilizer rounds | 0–120 | Fertilizer bags (Nutrition 09) |
| Water schedule | 0–240 | Drip scheduler (Irrigation 08) |
| Scout, and spray on evidence | 45–270 | Spray mix · spray log (Pests 10) |
| Harvest decision: green → dry | 150–270 | Revenue estimator (Harvest 12) |
Calculators
01Seed Rhizome CalculatorKg of seed, pieces and cost from spacing and piece weight — plus a degree-day emergence predictor. 02Spray Mix CalculatorConvert label rates (g/L or ml/L) into product per tank and per plot — Chapters 10–11. 03Yield & Revenue EstimatorFresh vs dried revenue using expected yield, recovery rate and local prices — Chapter 14. 04Drip Irrigation Schedulermm/week → run minutes per day from emitter flow, spacing and bed layout — Chapter 08. 05Liming CalculatorTonnage of agricultural lime to lift acid soil into the 5.5–6.5 target — Chapter 04. 06Fertilizer Bag CalculatorConvert N-P₂O₅-K₂O kg/ha into bags of urea, SSP and MOP, split by round — Chapter 09. 07Variety WizardWhich ginger should you grow? Screen varieties by market, altitude and rainfall — Chapter 02.Planning & record tools
08Ginger Budget DashboardEnd-to-end profit per hectare: seed and fertilizer computed from your spacing and rates, plus ROI and break-even. 09Spray Decision LogExport-ready records of every spray: product, rate, PHI and lot — saved in your browser. ✓Weekly Field ChecklistTick off 41 operations through the season; prints as A4 field sheets.Field aids
✓Weekly Field ChecklistTick off 41 operations through the season; prints as A4 field sheets. ⌕SearchInstant search across every chapter and tool. Press / from anywhere.Video library
Six hands-on videos, one per topic — chosen for field value, not production polish. The disease episode is from ICAR, India's national agricultural research system; the rest are working-farmer and how-to channels watched end-to-end before embedding. Nothing loads from YouTube until you press play, and each chapter pairs its video with a “While you watch” checklist of the points that matter.
▶Pre-Sprouting Ginger for Larger HarvestsSeed-prep head start that shows up at harvest — Chapter 05. ▶How to Plant and Grow Ginger in Any ClimateRhizome orientation, depth and spacing done right — Chapter 06. ▶How to Install a Drip Irrigation System for Small FarmsDrip tape, manifolds, filters and pressure in practice — Chapter 08. ▶Soft Rot Disease in Ginger — ICAR NEH PodcastICAR researchers on the disease that decides seasons — Chapter 11. ▶Harvesting Ginger After 10 MonthsA full season's arc — lift technique to storage — Chapter 12. ▶Organic Ginger Farming Without ChemicalsCompost fertility and zero-spray practice in the field — Chapter 15.